fix compile error on html.parser

added some more screen scraping words
db4
Doug Coleman 2008-05-19 18:58:56 -05:00
parent 3368f7d1cf
commit 44d0490ec0
2 changed files with 69 additions and 33 deletions

View File

@ -1,8 +1,11 @@
USING: assocs html.parser kernel math sequences strings ascii
arrays shuffle unicode.case namespaces splitting http
sequences.lib ;
sequences.lib accessors io combinators http.client ;
IN: html.parser.analyzer
: scrape-html ( url -- vector )
http-get parse-html ;
: (find-relative)
[ >r + dup r> ?nth* [ 2drop f f ] unless ] [ 2drop f ] if ;
@ -41,8 +44,8 @@ IN: html.parser.analyzer
: remove-blank-text ( vector -- vector' )
[
dup tag-name text = [
tag-text [ blank? ] all? not
dup name>> text = [
text>> [ blank? ] all? not
] [
drop t
] if
@ -50,49 +53,50 @@ IN: html.parser.analyzer
: trim-text ( vector -- vector' )
[
dup tag-name text = [
[ tag-text [ blank? ] trim ] keep
dup name>> text = [
[ text>> [ blank? ] trim ] keep
[ set-tag-text ] keep
] when
] map ;
: find-by-id ( id vector -- vector )
[ tag-attributes "id" swap at = ] with filter ;
[ attributes>> "id" swap at = ] with filter ;
: find-by-class ( id vector -- vector )
[ tag-attributes "class" swap at = ] with filter ;
[ attributes>> "class" swap at = ] with filter ;
: find-by-name ( str vector -- vector )
>r >lower r>
[ tag-name = ] with filter ;
[ name>> = ] with filter ;
: find-first-name ( str vector -- i/f tag/f )
>r >lower r>
[ tag-name = ] with find ;
[ name>> = ] with find ;
: find-matching-close ( str vector -- i/f tag/f )
>r >lower r>
[ [ tag-name = ] keep tag-closing? and ] with find ;
[ [ name>> = ] keep closing?>> and ] with find ;
: find-by-attribute-key ( key vector -- vector )
>r >lower r>
[ tag-attributes at ] with filter
[ attributes>> at ] with filter
sift ;
: find-by-attribute-key-value ( value key vector -- vector )
>r >lower r>
[ tag-attributes at over = ] with filter nip
[ attributes>> at over = ] with filter nip
sift ;
: find-first-attribute-key-value ( value key vector -- i/f tag/f )
>r >lower r>
[ tag-attributes at over = ] with find rot drop ;
[ attributes>> at over = ] with find rot drop ;
: find-between* ( i/f tag/f vector -- vector )
pick integer? [
rot tail-slice
>r tag-name r>
[ find-matching-close drop 1+ ] keep swap head
>r name>> r>
[ find-matching-close drop dup [ 1+ ] when ] keep
swap [ head ] [ first ] if*
] [
3drop V{ } clone
] if ;
@ -105,31 +109,63 @@ IN: html.parser.analyzer
: find-between-first ( string vector -- vector' )
[ find-first-name ] keep find-between ;
: find-between-all ( vector quot -- seq )
[ [ [ closing?>> not ] bi and ] curry find-all ] curry
[ [ >r first2 r> find-between* ] curry map ] bi ;
: tag-link ( tag -- link/f )
tag-attributes [ "href" swap at ] [ f ] if* ;
attributes>> [ "href" swap at ] [ f ] if* ;
: find-links ( vector -- vector )
[ tag-name "a" = ] filter
[ tag-link ] filter ;
: find-links ( vector -- vector' )
[ [ name>> "a" = ] [ attributes>> "href" swap at ] bi and ]
find-between-all ;
: link. ( vector -- )
[ second text>> write bl ]
[ first tag-link write nl ] bi ;
: find-by-text ( seq quot -- tag )
[ dup tag-name text = ] prepose find drop ;
[ dup name>> text = ] prepose find drop ;
: find-opening-tags-by-name ( name seq -- seq )
[ [ tag-name = ] keep tag-closing? not and ] with find-all ;
[ [ name>> = ] keep closing?>> not and ] with find-all ;
: href-contains? ( str tag -- ? )
tag-attributes "href" swap at* [ subseq? ] [ 2drop f ] if ;
attributes>> "href" swap at* [ subseq? ] [ 2drop f ] if ;
: find-forms ( vector -- vector' )
"form" over find-opening-tags-by-name
over [ >r first2 r> find-between* ] curry map
[ [ name>> { "form" "input" } member? ] filter ] map ;
: find-html-objects ( string vector -- vector' )
find-opening-tags-by-name
over [ >r first2 r> find-between* ] curry map ;
: form-action ( vector -- string )
[ name>> "form" = ] find nip
attributes>> "action" swap at ;
: hidden-form-values ( vector -- strings )
[ attributes>> "type" swap at "hidden" = ] filter ;
: input. ( tag -- )
dup name>> print
attributes>>
[ bl bl bl bl [ write "=" write ] [ write bl ] bi* nl ] assoc-each ;
: form. ( vector -- )
[ closing?>> not ] filter
[
{
{ [ dup name>> "form" = ]
[ "form action: " write attributes>> "action" swap at print
] }
{ [ dup name>> "input" = ] [ input. ] }
[ drop ]
} cond
] each ;
: query>assoc* ( str -- hash )
"?" split1 nip query>assoc ;
! clear "http://fark.com" http-get parse-html find-links [ "go.pl" swap start ] filter [ "=" split peek ] map
! clear "http://www.sailwx.info/shiptrack/cruiseships.phtml" http-get parse-html remove-blank-text
! "a" over find-opening-tags-by-name
! [ nip "shipposition.phtml?call=GBTT" swap href-contains? ] assoc-filter
! first first 8 + over nth
! tag-attributes "href" swap at query>assoc*
! "lat" over at "lon" rot at

View File

@ -91,7 +91,7 @@ SYMBOL: tagstack
read-dtd
] if ;
: read-tag ( -- )
: read-tag ( -- string )
[ get-char CHAR: > = get-char CHAR: < = or ] take-until
get-char CHAR: < = [ next* ] unless ;
@ -135,7 +135,7 @@ SYMBOL: tagstack
(parse-tag) make-tag push-tag
] if ;
: (parse-html) ( tag -- )
: (parse-html) ( -- )
get-next [
parse-text
parse-tag